TY - JOUR
T1 - 3D Printable and Sub-Micrometer Porous Polymeric Monoliths with Shape Reconfiguration Ability by Miniemulsion Templating
AU - Lo, Tzu Hsuan
AU - Yu, Sheng Sheng
N1 - Funding Information:
The authors thank the Ministry of Science and Technology in Taiwan for financial support (Young Scholar Fellowship Program, MOST 108-2636-E-006-005 and 109-2636-E-006-005). The authors also thank the support by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors gratefully acknowledge the use of Bruker Avance III 600 MHz spectrometer (NMR001900) of MOST 108-2731-M-006-001 belonging to the Core Facility Center of National Cheng Kung University.
Funding Information:
The authors thank the Ministry of Science and Technology in Taiwan for financial support (Young Scholar Fellowship Program, MOST 108‐2636‐E‐006‐005 and 109‐2636‐E‐006‐005). The authors also thank the support by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors gratefully acknowledge the use of Bruker Avance III 600 MHz spectrometer (NMR001900) of MOST 108‐2731‐M‐006‐001 belonging to the Core Facility Center of National Cheng Kung University.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2022/1
Y1 - 2022/1
N2 - Porous monoliths prepared by high internal phase emulsion (HIPE) templating have received various attentions in the fields of catalysis, separation, and tissue engineering. However, the application of the monoliths from HIPE is limited by their poor mechanical performance and the difficulty of fabricating hierarchically porous structures. Additive manufacturing is an emerging technique that achieves high design freedom by depositing materials layer-by-layer. This work designs medium internal phase emulsion (MIPE) ink with the concept of miniemulsion to prepare 3D printable porous polymeric monoliths with sub-micrometer pores. High shear energy is used to reduce the droplet size of the internal phase and jam the emulsion ink. The jammed MIPE ink shows prominent shear-thinning behavior and appropriate elastic modulus for direct ink writing (DIW). After printing, the external phase composed of stearyl acrylate and hexanediol diacrylate can be cured by photopolymerization to produce poly(MIPE) with interconnected pores in the size of several hundred nanometers. The printed poly(MIPE) demonstrates high mechanical strength and can be reprogrammed into complex geometries difficult for the common DIW processes. The proposed technique provides a new route to fabricate hierarchically porous monoliths with a drastic change of pore dimension, high mechanical strength, and tunable shape reconfiguration.
AB - Porous monoliths prepared by high internal phase emulsion (HIPE) templating have received various attentions in the fields of catalysis, separation, and tissue engineering. However, the application of the monoliths from HIPE is limited by their poor mechanical performance and the difficulty of fabricating hierarchically porous structures. Additive manufacturing is an emerging technique that achieves high design freedom by depositing materials layer-by-layer. This work designs medium internal phase emulsion (MIPE) ink with the concept of miniemulsion to prepare 3D printable porous polymeric monoliths with sub-micrometer pores. High shear energy is used to reduce the droplet size of the internal phase and jam the emulsion ink. The jammed MIPE ink shows prominent shear-thinning behavior and appropriate elastic modulus for direct ink writing (DIW). After printing, the external phase composed of stearyl acrylate and hexanediol diacrylate can be cured by photopolymerization to produce poly(MIPE) with interconnected pores in the size of several hundred nanometers. The printed poly(MIPE) demonstrates high mechanical strength and can be reprogrammed into complex geometries difficult for the common DIW processes. The proposed technique provides a new route to fabricate hierarchically porous monoliths with a drastic change of pore dimension, high mechanical strength, and tunable shape reconfiguration.
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U2 - 10.1002/mame.202100615
DO - 10.1002/mame.202100615
M3 - Article
AN - SCOPUS:85118878012
SN - 1438-7492
VL - 307
JO - Macromolecular Materials and Engineering
JF - Macromolecular Materials and Engineering
IS - 1
M1 - 2100615
ER -